Fixed AttachmentTimeline from missing first key.

http://esotericsoftware.com/forum/viewtopic.php?p=16600#p16600
Updated Skeleton Viewer.
[Unity Bugfix] SkeletonAnimationInspector interfering with outside behaviour control of animation.  Left TODO for further improvement later
Merge pull request #302 from Fenrisul/master

[Unity Bugfix] SkeletonAnimationInspector interfering with animation
Getter for skeleton.
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'upstream/master'